An 18m high cavern is being excavated for Sydney Metro’s Pyrmont Station
Excavation work has begun for the new Pyrmont Metro Station as part of the Sydney Metro West project.
Two roadheaders are currently working at the station’s eastern end, with a third expected to arrive later this month. These 117-tonne machines have already carved more than 90 metres into the future station cavern, which will eventually measure 18 metres high, 24 metres wide and 170 metres long.
The roadheaders are expected to complete the station cavern by early 2025, paving the way for tunnel boring machines Jessie and Ruby as they build the 2.3-kilometre tunnels linking The Bays to Hunter Street in the Sydney CBD.
In total, the roadheaders will remove 151,000 tonnes of material from the site, with around 25,000 tonnes already excavated. All clean material from the excavation will be repurposed for ongoing projects across Sydney.
Additionally, two station shafts are being excavated by rock hammers, to serve as pedestrian access points. The eastern shaft will reach a depth of 40 metres and the western shaft, 33 metres.
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